You want to study at the Hogwarts School of Witchcraft and Wizardry after five years. You need 800800800 pieces of muggle-money to study there. You decide to deposit some pieces in the bank at an annual interest rate of 12\%12%12, percent. How many pieces should you deposit today if you want to use the total amount to pay the fees?

You should deposit 500 pieces of muggle-money.

Step-by-step explanation:

We would apply the formula for determining simple interest which is expressed as

I = PRT/100

Where

I represents interest paid on the amount of money deposited.

P represents the principal or amount of money deposited.

R represents interest rate on the deposit.

T represents the duration of the deposit in years.

From the information given,

R = 12%

T = 5 years

Total amount, A = 800

A = P + I

I = A - P

Therefore,

800 - P = (P × 12 × 5)/100

800 - P = 0.6P

800 = 0.6P + P = 1.6P

P = 800/1.6

P = 500

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

i think 5 miles per hour

step-by-step explanation: